cosmopolitan/tool/plinko/lib/histo.h

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#ifndef COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_
#define COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_
#include "libc/intrin/bsr.h"
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#include "libc/macros.internal.h"
COSMOPOLITAN_C_START_
#define HISTO(H, X) \
do { \
uint64_t x_ = X; \
x_ = x_ ? bsrl(x_) + 1 : x_; \
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++H[MIN(x_, ARRAYLEN(H) - 1)]; \
} while (0)
void PrintHistogram(int, const char *, const long *, size_t);
long GetLongSum(const long *, size_t);
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_ */